Preheat the oven to 200°C. Add the garlic and olive oil to a small mixing bowl. Slice the baguette into slices of about 1 cm, place the slices on a lined baking tray, brush the slices, using the rosemary as the brush, with the olive oil. Bake the crostini’s for 5 minutes or until golden, turn them over brush the other side with olive oil and bake for another 5 minutes or until golden. Remove from oven and allow to cool on a cooling rack.